var bmWin;


function explanationMini(urlStr,winName,winOpt) {

    if(bmWin == null){
    	//alert("bmWin is null");
	    bmWin = window.open(urlStr,winName,winOpt);
        if (bmWin.opener == null) bmWin.opener = window;
        bmWin.opener.name = "opener";
	    bmWin.focus();
    }else{
	    if(bmWin.closed == true){
		    //alert("bmWin is closed");
		    bmWin = window.open(urlStr,winName,winOpt);
            if (bmWin.opener == null) bmWin.opener = window;
            bmWin.opener.name = "opener";
	    }else{
		    //alert("bmWin already open");
		    bmWin.location.href = urlStr;
		    bmWin.focus();
	    }
    }
}